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    China has long been a leader in the field of genetic research aimed at improving agriculture. 在以提高农业生产为目标的基因研究领域里.中国长期以来都处于领先地位. Unit 12 Fact and fantasy 【查看更多】

     

    题目列表(包括答案和解析)

    China has long been a leader in the field of genetic research ________ improving agriculture.

    A. aim to        B. aiming on                 C. aimed at                   D. aims with

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     China has long been a leader in the field of genetic research ________ improving agriculture.

    A. aim to       B. aiming on            C. aimed at         D. aims with

     

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    China has long been a leader in the field of genetic research ________ at improving agriculture．

    [　　]
    A．

    aimed

    B．

    aiming

    C．

    being aimed

    D．

    to aim

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